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s4:drsuapi: make sure we never return the same highwatermark twice in a replication...
[Samba/id10ts.git] / source3 / smbd / smb2_create.c
blob21f25494c70ac429a941379ad501b06bde39c533
1 /*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
4
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) Jeremy Allison 2010
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "includes.h"
23 #include "printing.h"
24 #include "smbd/smbd.h"
25 #include "smbd/globals.h"
26 #include "../libcli/smb/smb_common.h"
27 #include "../librpc/gen_ndr/ndr_security.h"
28 #include "../lib/util/tevent_ntstatus.h"
29 #include "messages.h"
30
31 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
32 {
33 switch(in_oplock_level) {
34 case SMB2_OPLOCK_LEVEL_NONE:
35 return NO_OPLOCK;
36 case SMB2_OPLOCK_LEVEL_II:
37 return LEVEL_II_OPLOCK;
38 case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
39 return EXCLUSIVE_OPLOCK;
40 case SMB2_OPLOCK_LEVEL_BATCH:
41 return BATCH_OPLOCK;
42 case SMB2_OPLOCK_LEVEL_LEASE:
43 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
44 "LEASE_OPLOCK_REQUESTED\n"));
45 return NO_OPLOCK;
46 default:
47 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
48 "unknown level %u\n",
49 (unsigned int)in_oplock_level));
50 return NO_OPLOCK;
51 }
52 }
53
54 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
55 {
56 if (BATCH_OPLOCK_TYPE(oplock_type)) {
57 return SMB2_OPLOCK_LEVEL_BATCH;
58 } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
59 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
60 } else if (oplock_type == LEVEL_II_OPLOCK) {
61 /*
62 * Don't use LEVEL_II_OPLOCK_TYPE here as
63 * this also includes FAKE_LEVEL_II_OPLOCKs
64 * which are internal only.
65 */
66 return SMB2_OPLOCK_LEVEL_II;
67 } else {
68 return SMB2_OPLOCK_LEVEL_NONE;
69 }
70 }
71
72 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
73 struct tevent_context *ev,
74 struct smbd_smb2_request *smb2req,
75 uint8_t in_oplock_level,
76 uint32_t in_impersonation_level,
77 uint32_t in_desired_access,
78 uint32_t in_file_attributes,
79 uint32_t in_share_access,
80 uint32_t in_create_disposition,
81 uint32_t in_create_options,
82 const char *in_name,
83 struct smb2_create_blobs in_context_blobs);
84 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
85 TALLOC_CTX *mem_ctx,
86 uint8_t *out_oplock_level,
87 uint32_t *out_create_action,
88 NTTIME *out_creation_time,
89 NTTIME *out_last_access_time,
90 NTTIME *out_last_write_time,
91 NTTIME *out_change_time,
92 uint64_t *out_allocation_size,
93 uint64_t *out_end_of_file,
94 uint32_t *out_file_attributes,
95 uint64_t *out_file_id_persistent,
96 uint64_t *out_file_id_volatile,
97 struct smb2_create_blobs *out_context_blobs);
98
99 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
100 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
101 {
102 const uint8_t *inbody;
103 const struct iovec *indyniov;
104 uint8_t in_oplock_level;
105 uint32_t in_impersonation_level;
106 uint32_t in_desired_access;
107 uint32_t in_file_attributes;
108 uint32_t in_share_access;
109 uint32_t in_create_disposition;
110 uint32_t in_create_options;
111 uint16_t in_name_offset;
112 uint16_t in_name_length;
113 DATA_BLOB in_name_buffer;
114 char *in_name_string;
115 size_t in_name_string_size;
116 uint32_t name_offset = 0;
117 uint32_t name_available_length = 0;
118 uint32_t in_context_offset;
119 uint32_t in_context_length;
120 DATA_BLOB in_context_buffer;
121 struct smb2_create_blobs in_context_blobs;
122 uint32_t context_offset = 0;
123 uint32_t context_available_length = 0;
124 uint32_t dyn_offset;
125 NTSTATUS status;
126 bool ok;
127 struct tevent_req *tsubreq;
128
129 status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
130 if (!NT_STATUS_IS_OK(status)) {
131 return smbd_smb2_request_error(smb2req, status);
132 }
133 inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
134
135 in_oplock_level = CVAL(inbody, 0x03);
136 in_impersonation_level = IVAL(inbody, 0x04);
137 in_desired_access = IVAL(inbody, 0x18);
138 in_file_attributes = IVAL(inbody, 0x1C);
139 in_share_access = IVAL(inbody, 0x20);
140 in_create_disposition = IVAL(inbody, 0x24);
141 in_create_options = IVAL(inbody, 0x28);
142 in_name_offset = SVAL(inbody, 0x2C);
143 in_name_length = SVAL(inbody, 0x2E);
144 in_context_offset = IVAL(inbody, 0x30);
145 in_context_length = IVAL(inbody, 0x34);
146
147 /*
148 * First check if the dynamic name and context buffers
149 * are correctly specified.
150 *
151 * Note: That we don't check if the name and context buffers
152 * overlap
153 */
154
155 dyn_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req);
156
157 if (in_name_offset == 0 && in_name_length == 0) {
158 /* This is ok */
159 name_offset = 0;
160 } else if (in_name_offset < dyn_offset) {
161 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
162 } else {
163 name_offset = in_name_offset - dyn_offset;
164 }
165
166 indyniov = SMBD_SMB2_IN_DYN_IOV(smb2req);
167
168 if (name_offset > indyniov->iov_len) {
169 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
170 }
171
172 name_available_length = indyniov->iov_len - name_offset;
173
174 if (in_name_length > name_available_length) {
175 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
176 }
177
178 in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
179 in_name_buffer.length = in_name_length;
180
181 if (in_context_offset == 0 && in_context_length == 0) {
182 /* This is ok */
183 context_offset = 0;
184 } else if (in_context_offset < dyn_offset) {
185 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
186 } else {
187 context_offset = in_context_offset - dyn_offset;
188 }
189
190 if (context_offset > indyniov->iov_len) {
191 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
192 }
193
194 context_available_length = indyniov->iov_len - context_offset;
195
196 if (in_context_length > context_available_length) {
197 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
198 }
199
200 in_context_buffer.data = (uint8_t *)indyniov->iov_base +
201 context_offset;
202 in_context_buffer.length = in_context_length;
203
204 /*
205 * Now interpret the name and context buffers
206 */
207
208 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
209 in_name_buffer.data,
210 in_name_buffer.length,
211 &in_name_string,
212 &in_name_string_size);
213 if (!ok) {
214 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
215 }
216
217 if (in_name_buffer.length == 0) {
218 in_name_string_size = 0;
219 }
220
221 if (strlen(in_name_string) != in_name_string_size) {
222 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
223 }
224
225 ZERO_STRUCT(in_context_blobs);
226 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
227 if (!NT_STATUS_IS_OK(status)) {
228 return smbd_smb2_request_error(smb2req, status);
229 }
230
231 tsubreq = smbd_smb2_create_send(smb2req,
232 smb2req->sconn->ev_ctx,
233 smb2req,
234 in_oplock_level,
235 in_impersonation_level,
236 in_desired_access,
237 in_file_attributes,
238 in_share_access,
239 in_create_disposition,
240 in_create_options,
241 in_name_string,
242 in_context_blobs);
243 if (tsubreq == NULL) {
244 smb2req->subreq = NULL;
245 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
246 }
247 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
248
249 /*
250 * For now we keep the logic that we do not send STATUS_PENDING
251 * for sharing violations, so we just wait 2 seconds.
252 *
253 * TODO: we need more tests for this.
254 */
255 return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
256 }
257
258 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
259 {
260 uint8_t *reqhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
261 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
262 }
263
264 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
265 {
266 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
267 struct smbd_smb2_request);
268 DATA_BLOB outbody;
269 DATA_BLOB outdyn;
270 uint8_t out_oplock_level = 0;
271 uint32_t out_create_action = 0;
272 NTTIME out_creation_time = 0;
273 NTTIME out_last_access_time = 0;
274 NTTIME out_last_write_time = 0;
275 NTTIME out_change_time = 0;
276 uint64_t out_allocation_size = 0;
277 uint64_t out_end_of_file = 0;
278 uint32_t out_file_attributes = 0;
279 uint64_t out_file_id_persistent = 0;
280 uint64_t out_file_id_volatile = 0;
281 struct smb2_create_blobs out_context_blobs;
282 DATA_BLOB out_context_buffer;
283 uint16_t out_context_buffer_offset = 0;
284 NTSTATUS status;
285 NTSTATUS error; /* transport error */
286
287 status = smbd_smb2_create_recv(tsubreq,
288 smb2req,
289 &out_oplock_level,
290 &out_create_action,
291 &out_creation_time,
292 &out_last_access_time,
293 &out_last_write_time,
294 &out_change_time,
295 &out_allocation_size,
296 &out_end_of_file,
297 &out_file_attributes,
298 &out_file_id_persistent,
299 &out_file_id_volatile,
300 &out_context_blobs);
301 if (!NT_STATUS_IS_OK(status)) {
302 error = smbd_smb2_request_error(smb2req, status);
303 if (!NT_STATUS_IS_OK(error)) {
304 smbd_server_connection_terminate(smb2req->sconn,
305 nt_errstr(error));
306 return;
307 }
308 return;
309 }
310
311 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
312 if (!NT_STATUS_IS_OK(status)) {
313 error = smbd_smb2_request_error(smb2req, status);
314 if (!NT_STATUS_IS_OK(error)) {
315 smbd_server_connection_terminate(smb2req->sconn,
316 nt_errstr(error));
317 return;
318 }
319 return;
320 }
321
322 if (out_context_buffer.length > 0) {
323 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
324 }
325
326 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
327 if (outbody.data == NULL) {
328 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
329 if (!NT_STATUS_IS_OK(error)) {
330 smbd_server_connection_terminate(smb2req->sconn,
331 nt_errstr(error));
332 return;
333 }
334 return;
335 }
336
337 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
338 SCVAL(outbody.data, 0x02,
339 out_oplock_level); /* oplock level */
340 SCVAL(outbody.data, 0x03, 0); /* reserved */
341 SIVAL(outbody.data, 0x04,
342 out_create_action); /* create action */
343 SBVAL(outbody.data, 0x08,
344 out_creation_time); /* creation time */
345 SBVAL(outbody.data, 0x10,
346 out_last_access_time); /* last access time */
347 SBVAL(outbody.data, 0x18,
348 out_last_write_time); /* last write time */
349 SBVAL(outbody.data, 0x20,
350 out_change_time); /* change time */
351 SBVAL(outbody.data, 0x28,
352 out_allocation_size); /* allocation size */
353 SBVAL(outbody.data, 0x30,
354 out_end_of_file); /* end of file */
355 SIVAL(outbody.data, 0x38,
356 out_file_attributes); /* file attributes */
357 SIVAL(outbody.data, 0x3C, 0); /* reserved */
358 SBVAL(outbody.data, 0x40,
359 out_file_id_persistent); /* file id (persistent) */
360 SBVAL(outbody.data, 0x48,
361 out_file_id_volatile); /* file id (volatile) */
362 SIVAL(outbody.data, 0x50,
363 out_context_buffer_offset); /* create contexts offset */
364 SIVAL(outbody.data, 0x54,
365 out_context_buffer.length); /* create contexts length */
366
367 outdyn = out_context_buffer;
368
369 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
370 if (!NT_STATUS_IS_OK(error)) {
371 smbd_server_connection_terminate(smb2req->sconn,
372 nt_errstr(error));
373 return;
374 }
375 }
376
377 struct smbd_smb2_create_state {
378 struct smbd_smb2_request *smb2req;
379 struct smb_request *smb1req;
380 bool open_was_deferred;
381 struct timed_event *te;
382 struct tevent_immediate *im;
383 struct timeval request_time;
384 struct file_id id;
385 DATA_BLOB private_data;
386 uint8_t out_oplock_level;
387 uint32_t out_create_action;
388 NTTIME out_creation_time;
389 NTTIME out_last_access_time;
390 NTTIME out_last_write_time;
391 NTTIME out_change_time;
392 uint64_t out_allocation_size;
393 uint64_t out_end_of_file;
394 uint32_t out_file_attributes;
395 uint64_t out_file_id_persistent;
396 uint64_t out_file_id_volatile;
397 struct smb2_create_blobs out_context_blobs;
398 };
399
400 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
401 struct tevent_context *ev,
402 struct smbd_smb2_request *smb2req,
403 uint8_t in_oplock_level,
404 uint32_t in_impersonation_level,
405 uint32_t in_desired_access,
406 uint32_t in_file_attributes,
407 uint32_t in_share_access,
408 uint32_t in_create_disposition,
409 uint32_t in_create_options,
410 const char *in_name,
411 struct smb2_create_blobs in_context_blobs)
412 {
413 struct tevent_req *req = NULL;
414 struct smbd_smb2_create_state *state = NULL;
415 NTSTATUS status;
416 struct smb_request *smb1req = NULL;
417 files_struct *result = NULL;
418 int info;
419 struct timespec write_time_ts;
420 struct smb2_create_blobs out_context_blobs;
421 int requested_oplock_level;
422 struct smb2_create_blob *dhnc = NULL;
423 struct smb2_create_blob *dh2c = NULL;
424 struct smbXsrv_open *op = NULL;
425
426 ZERO_STRUCT(out_context_blobs);
427
428 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
429 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
430 } else {
431 requested_oplock_level = in_oplock_level;
432 }
433
434
435 if (smb2req->subreq == NULL) {
436 /* New create call. */
437 req = tevent_req_create(mem_ctx, &state,
438 struct smbd_smb2_create_state);
439 if (req == NULL) {
440 return NULL;
441 }
442 state->smb2req = smb2req;
443
444 smb1req = smbd_smb2_fake_smb_request(smb2req);
445 if (tevent_req_nomem(smb1req, req)) {
446 return tevent_req_post(req, ev);
447 }
448 state->smb1req = smb1req;
449 smb2req->subreq = req;
450 DEBUG(10,("smbd_smb2_create: name[%s]\n",
451 in_name));
452 } else {
453 /* Re-entrant create call. */
454 req = smb2req->subreq;
455 state = tevent_req_data(req,
456 struct smbd_smb2_create_state);
457 smb1req = state->smb1req;
458 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
459 in_name ));
460 }
461
462 dhnc = smb2_create_blob_find(&in_context_blobs,
463 SMB2_CREATE_TAG_DHNC);
464
465 if (dhnc) {
466 if (dhnc->data.length != 16) {
467 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
468 return tevent_req_post(req, ev);
469 }
470 if (in_context_blobs.num_blobs != 1) {
471 /*
472 * DHNC should be the only one.
473 */
474 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
475 return tevent_req_post(req, ev);
476 }
477 }
478
479 dh2c = smb2_create_blob_find(&in_context_blobs,
480 SMB2_CREATE_TAG_DH2C);
481 if (dh2c) {
482 if (dh2c->data.length != 36) {
483 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
484 return tevent_req_post(req, ev);
485 }
486 if (in_context_blobs.num_blobs != 1) {
487 /*
488 * DH2C should be the only one.
489 */
490 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
491 return tevent_req_post(req, ev);
492 }
493 }
494
495 if (IS_IPC(smb1req->conn)) {
496 const char *pipe_name = in_name;
497
498 if (dhnc || dh2c) {
499 /* durable handles are not supported on IPC$ */
500 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
501 return tevent_req_post(req, ev);
502 }
503
504 if (!lp_nt_pipe_support()) {
505 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
506 return tevent_req_post(req, ev);
507 }
508
509 status = open_np_file(smb1req, pipe_name, &result);
510 if (!NT_STATUS_IS_OK(status)) {
511 tevent_req_nterror(req, status);
512 return tevent_req_post(req, ev);
513 }
514 info = FILE_WAS_OPENED;
515 } else if (CAN_PRINT(smb1req->conn)) {
516 if (dhnc || dh2c) {
517 /* durable handles are not supported on printers */
518 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
519 return tevent_req_post(req, ev);
520 }
521
522 status = file_new(smb1req, smb1req->conn, &result);
523 if(!NT_STATUS_IS_OK(status)) {
524 tevent_req_nterror(req, status);
525 return tevent_req_post(req, ev);
526 }
527
528 status = print_spool_open(result, in_name,
529 smb1req->vuid);
530 if (!NT_STATUS_IS_OK(status)) {
531 file_free(smb1req, result);
532 tevent_req_nterror(req, status);
533 return tevent_req_post(req, ev);
534 }
535 info = FILE_WAS_CREATED;
536 } else {
537 char *fname;
538 struct smb2_create_blob *exta = NULL;
539 struct ea_list *ea_list = NULL;
540 struct smb2_create_blob *mxac = NULL;
541 NTTIME max_access_time = 0;
542 struct smb2_create_blob *secd = NULL;
543 struct security_descriptor *sec_desc = NULL;
544 struct smb2_create_blob *dhnq = NULL;
545 struct smb2_create_blob *alsi = NULL;
546 uint64_t allocation_size = 0;
547 struct smb2_create_blob *twrp = NULL;
548 struct smb2_create_blob *qfid = NULL;
549 struct GUID create_guid = GUID_zero();
550 bool update_open = false;
551 bool durable_requested = false;
552 uint32_t durable_timeout_msec = 0;
553 bool do_durable_reconnect = false;
554 struct smb2_create_blob *dh2q = NULL;
555
556 exta = smb2_create_blob_find(&in_context_blobs,
557 SMB2_CREATE_TAG_EXTA);
558 mxac = smb2_create_blob_find(&in_context_blobs,
559 SMB2_CREATE_TAG_MXAC);
560 secd = smb2_create_blob_find(&in_context_blobs,
561 SMB2_CREATE_TAG_SECD);
562 dhnq = smb2_create_blob_find(&in_context_blobs,
563 SMB2_CREATE_TAG_DHNQ);
564 alsi = smb2_create_blob_find(&in_context_blobs,
565 SMB2_CREATE_TAG_ALSI);
566 twrp = smb2_create_blob_find(&in_context_blobs,
567 SMB2_CREATE_TAG_TWRP);
568 qfid = smb2_create_blob_find(&in_context_blobs,
569 SMB2_CREATE_TAG_QFID);
570 dh2q = smb2_create_blob_find(&in_context_blobs,
571 SMB2_CREATE_TAG_DH2Q);
572
573 fname = talloc_strdup(state, in_name);
574 if (tevent_req_nomem(fname, req)) {
575 return tevent_req_post(req, ev);
576 }
577
578 if (exta) {
579 ea_list = read_nttrans_ea_list(mem_ctx,
580 (const char *)exta->data.data, exta->data.length);
581 if (!ea_list) {
582 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
583 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
584 return tevent_req_post(req, ev);
585 }
586 }
587
588 if (mxac) {
589 if (mxac->data.length == 0) {
590 max_access_time = 0;
591 } else if (mxac->data.length == 8) {
592 max_access_time = BVAL(mxac->data.data, 0);
593 } else {
594 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
595 return tevent_req_post(req, ev);
596 }
597 }
598
599 if (secd) {
600 enum ndr_err_code ndr_err;
601
602 sec_desc = talloc_zero(state, struct security_descriptor);
603 if (tevent_req_nomem(sec_desc, req)) {
604 return tevent_req_post(req, ev);
605 }
606
607 ndr_err = ndr_pull_struct_blob(&secd->data,
608 sec_desc, sec_desc,
609 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
610 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
611 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
612 ndr_errstr(ndr_err)));
613 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
614 return tevent_req_post(req, ev);
615 }
616 }
617
618 if (dhnq) {
619 if (dhnq->data.length != 16) {
620 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
621 return tevent_req_post(req, ev);
622 }
623
624 if (dh2q) {
625 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
626 return tevent_req_post(req, ev);
627 }
628
629 /*
630 * durable handle request is processed below.
631 */
632 durable_requested = true;
633 /*
634 * Set the timeout to 16 mins.
635 *
636 * TODO: test this against Windows 2012
637 * as the default for durable v2 is 1 min.
638 */
639 durable_timeout_msec = (16*60*1000);
640 }
641
642 if (dh2q) {
643 const uint8_t *p = dh2q->data.data;
644 uint32_t durable_v2_timeout = 0;
645 DATA_BLOB create_guid_blob;
646
647 if (dh2q->data.length != 32) {
648 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
649 return tevent_req_post(req, ev);
650 }
651
652 if (dhnq) {
653 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
654 return tevent_req_post(req, ev);
655 }
656
657 durable_v2_timeout = IVAL(p, 0);
658 create_guid_blob = data_blob_const(p + 16, 16);
659
660 status = GUID_from_ndr_blob(&create_guid_blob,
661 &create_guid);
662 if (tevent_req_nterror(req, status)) {
663 return tevent_req_post(req, ev);
664 }
665 /*
666 * we need to store the create_guid later
667 */
668 update_open = true;
669
670 /*
671 * durable handle v2 request processed below
672 */
673 durable_requested = true;
674 durable_timeout_msec = durable_v2_timeout;
675 if (durable_timeout_msec == 0) {
676 /*
677 * Set the timeout to 1 min as default.
678 *
679 * This matches Windows 2012.
680 */
681 durable_timeout_msec = (60*1000);
682 }
683 }
684
685 if (dhnc) {
686 NTTIME now = timeval_to_nttime(&smb2req->request_time);
687 uint64_t persistent_id;
688
689 persistent_id = BVAL(dhnc->data.data, 0);
690
691 status = smb2srv_open_recreate(smb2req->sconn->conn,
692 smb1req->conn->session_info,
693 persistent_id, create_guid,
694 now, &op);
695 if (!NT_STATUS_IS_OK(status)) {
696 DEBUG(3, ("smbd_smb2_create_send: "
697 "smb2srv_open_recreate v1 failed: %s\n",
698 nt_errstr(status)));
699 tevent_req_nterror(req, status);
700 return tevent_req_post(req, ev);
701 }
702
703 DEBUG(10, ("smb2_create_send: DHNC: %s recreate the "
704 "smb2srv_open struct for a durable handle.\n",
705 op->global->durable ? "did" : "could not"));
706
707 if (!op->global->durable) {
708 talloc_free(op);
709 tevent_req_nterror(req,
710 NT_STATUS_OBJECT_NAME_NOT_FOUND);
711 return tevent_req_post(req, ev);
712 }
713
714 do_durable_reconnect = true;
715 }
716
717 if (dh2c) {
718 const uint8_t *p = dh2c->data.data;
719 NTTIME now = timeval_to_nttime(&smb2req->request_time);
720 uint64_t persistent_id;
721 DATA_BLOB create_guid_blob;
722
723 persistent_id = BVAL(p, 0);
724 create_guid_blob = data_blob_const(p + 16, 16);
725
726 status = GUID_from_ndr_blob(&create_guid_blob,
727 &create_guid);
728 if (tevent_req_nterror(req, status)) {
729 return tevent_req_post(req, ev);
730 }
731
732 status = smb2srv_open_recreate(smb2req->sconn->conn,
733 smb1req->conn->session_info,
734 persistent_id, create_guid,
735 now, &op);
736 if (!NT_STATUS_IS_OK(status)) {
737 DEBUG(3, ("smbd_smb2_create_send: "
738 "smb2srv_open_recreate v2 failed: %s\n",
739 nt_errstr(status)));
740 tevent_req_nterror(req, status);
741 return tevent_req_post(req, ev);
742 }
743
744 DEBUG(10, ("smb2_create_send: DH2C: %s recreate the "
745 "smb2srv_open struct for a durable handle.\n",
746 op->global->durable ? "did" : "could not"));
747
748 if (!op->global->durable) {
749 talloc_free(op);
750 tevent_req_nterror(req,
751 NT_STATUS_OBJECT_NAME_NOT_FOUND);
752 return tevent_req_post(req, ev);
753 }
754
755 do_durable_reconnect = true;
756 }
757
758 if (alsi) {
759 if (alsi->data.length != 8) {
760 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
761 return tevent_req_post(req, ev);
762 }
763 allocation_size = BVAL(alsi->data.data, 0);
764 }
765
766 if (twrp) {
767 NTTIME nttime;
768 time_t t;
769 struct tm *tm;
770
771 if (twrp->data.length != 8) {
772 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
773 return tevent_req_post(req, ev);
774 }
775
776 nttime = BVAL(twrp->data.data, 0);
777 t = nt_time_to_unix(nttime);
778 tm = gmtime(&t);
779
780 TALLOC_FREE(fname);
781 fname = talloc_asprintf(state,
782 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
783 tm->tm_year + 1900,
784 tm->tm_mon + 1,
785 tm->tm_mday,
786 tm->tm_hour,
787 tm->tm_min,
788 tm->tm_sec,
789 in_name);
790 if (tevent_req_nomem(fname, req)) {
791 return tevent_req_post(req, ev);
792 }
793 }
794
795 if (qfid) {
796 if (qfid->data.length != 0) {
797 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
798 return tevent_req_post(req, ev);
799 }
800 }
801
802 /* these are ignored for SMB2 */
803 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
804 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
805
806 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
807
808 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
809
810 /*
811 * For the backend file open procedure, there are
812 * two possible modes: durable_reconnect or not.
813 */
814 if (do_durable_reconnect) {
815 DATA_BLOB new_cookie = data_blob_null;
816
817 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
818 smb1req,
819 op,
820 op->global->backend_cookie,
821 op, &result, &new_cookie);
822 if (!NT_STATUS_IS_OK(status)) {
823 NTSTATUS return_status;
824
825 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
826
827 DEBUG(3, ("smbd_smb2_create_send: "
828 "durable_reconnect failed: %s => %s\n",
829 nt_errstr(status),
830 nt_errstr(return_status)));
831
832 tevent_req_nterror(req, return_status);
833 return tevent_req_post(req, ev);
834 }
835
836 data_blob_free(&op->global->backend_cookie);
837 op->global->backend_cookie = new_cookie;
838
839 op->status = NT_STATUS_OK;
840 op->global->disconnect_time = 0;
841
842 status = smbXsrv_open_update(op);
843 if (!NT_STATUS_IS_OK(status)) {
844 tevent_req_nterror(req, status);
845 return tevent_req_post(req, ev);
846 }
847
848 info = FILE_WAS_OPENED;
849 } else {
850 struct smb_filename *smb_fname = NULL;
851
852 /*
853 * For a DFS path the function parse_dfs_path()
854 * will do the path processing.
855 */
856
857 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
858 /* convert '\\' into '/' */
859 status = check_path_syntax(fname);
860 if (!NT_STATUS_IS_OK(status)) {
861 tevent_req_nterror(req, status);
862 return tevent_req_post(req, ev);
863 }
864 }
865
866 status = filename_convert(req,
867 smb1req->conn,
868 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
869 fname,
870 0, /* unix_convert flags */
871 NULL, /* ppath_contains_wcards */
872 &smb_fname);
873 if (!NT_STATUS_IS_OK(status)) {
874 tevent_req_nterror(req, status);
875 return tevent_req_post(req, ev);
876 }
877
878 status = SMB_VFS_CREATE_FILE(smb1req->conn,
879 smb1req,
880 0, /* root_dir_fid */
881 smb_fname,
882 in_desired_access,
883 in_share_access,
884 in_create_disposition,
885 in_create_options,
886 in_file_attributes,
887 map_smb2_oplock_levels_to_samba(requested_oplock_level),
888 allocation_size,
889 0, /* private_flags */
890 sec_desc,
891 ea_list,
892 &result,
893 &info);
894 if (!NT_STATUS_IS_OK(status)) {
895 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
896 return req;
897 }
898 tevent_req_nterror(req, status);
899 return tevent_req_post(req, ev);
900 }
901 op = result->op;
902 }
903
904 /*
905 * here we have op == result->op
906 */
907
908 DEBUG(10, ("smbd_smb2_create_send: "
909 "response construction phase\n"));
910
911 if (mxac) {
912 NTTIME last_write_time;
913
914 unix_timespec_to_nt_time(&last_write_time,
915 result->fsp_name->st.st_ex_mtime);
916 if (last_write_time != max_access_time) {
917 uint8_t p[8];
918 uint32_t max_access_granted;
919 DATA_BLOB blob = data_blob_const(p, sizeof(p));
920
921 status = smbd_calculate_access_mask(smb1req->conn,
922 result->fsp_name,
923 false,
924 SEC_FLAG_MAXIMUM_ALLOWED,
925 &max_access_granted);
926
927 SIVAL(p, 0, NT_STATUS_V(status));
928 SIVAL(p, 4, max_access_granted);
929
930 status = smb2_create_blob_add(state,
931 &out_context_blobs,
932 SMB2_CREATE_TAG_MXAC,
933 blob);
934 if (!NT_STATUS_IS_OK(status)) {
935 tevent_req_nterror(req, status);
936 return tevent_req_post(req, ev);
937 }
938 }
939 }
940
941 if (durable_requested &&
942 BATCH_OPLOCK_TYPE(result->oplock_type))
943 {
944 status = SMB_VFS_DURABLE_COOKIE(result,
945 op,
946 &op->global->backend_cookie);
947 if (!NT_STATUS_IS_OK(status)) {
948 op->global->backend_cookie = data_blob_null;
949 }
950 }
951 if (op->global->backend_cookie.length > 0) {
952 update_open = true;
953
954 op->global->durable = true;
955 op->global->durable_timeout_msec = durable_timeout_msec;
956 }
957
958 if (update_open) {
959 op->global->create_guid = create_guid;
960
961 status = smbXsrv_open_update(op);
962 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
963 "returned %s\n",
964 nt_errstr(status)));
965 if (!NT_STATUS_IS_OK(status)) {
966 tevent_req_nterror(req, status);
967 return tevent_req_post(req, ev);
968 }
969 }
970
971 if (dhnq && op->global->durable) {
972 uint8_t p[8] = { 0, };
973 DATA_BLOB blob = data_blob_const(p, sizeof(p));
974
975 status = smb2_create_blob_add(state,
976 &out_context_blobs,
977 SMB2_CREATE_TAG_DHNQ,
978 blob);
979 if (!NT_STATUS_IS_OK(status)) {
980 tevent_req_nterror(req, status);
981 return tevent_req_post(req, ev);
982 }
983 }
984
985 if (dh2q && op->global->durable) {
986 uint8_t p[8] = { 0, };
987 DATA_BLOB blob = data_blob_const(p, sizeof(p));
988 uint32_t durable_v2_response_flags = 0;
989
990 SIVAL(p, 0, op->global->durable_timeout_msec);
991 SIVAL(p, 4, durable_v2_response_flags);
992
993 status = smb2_create_blob_add(state, &out_context_blobs,
994 SMB2_CREATE_TAG_DH2Q,
995 blob);
996 if (!NT_STATUS_IS_OK(status)) {
997 tevent_req_nterror(req, status);
998 return tevent_req_post(req, ev);
999 }
1000 }
1001
1002 if (qfid) {
1003 uint8_t p[32];
1004 uint64_t file_index = get_FileIndex(result->conn,
1005 &result->fsp_name->st);
1006 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1007
1008 ZERO_STRUCT(p);
1009
1010 /* From conversations with Microsoft engineers at
1011 the MS plugfest. The first 8 bytes are the "volume index"
1012 == inode, the second 8 bytes are the "volume id",
1013 == dev. This will be updated in the SMB2 doc. */
1014 SBVAL(p, 0, file_index);
1015 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1016
1017 status = smb2_create_blob_add(state, &out_context_blobs,
1018 SMB2_CREATE_TAG_QFID,
1019 blob);
1020 if (!NT_STATUS_IS_OK(status)) {
1021 tevent_req_nterror(req, status);
1022 return tevent_req_post(req, ev);
1023 }
1024 }
1025 }
1026
1027 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1028
1029 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1030 state->out_oplock_level = in_oplock_level;
1031 } else {
1032 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1033 }
1034
1035 if ((in_create_disposition == FILE_SUPERSEDE)
1036 && (info == FILE_WAS_OVERWRITTEN)) {
1037 state->out_create_action = FILE_WAS_SUPERSEDED;
1038 } else {
1039 state->out_create_action = info;
1040 }
1041 state->out_file_attributes = dos_mode(result->conn,
1042 result->fsp_name);
1043 /* Deal with other possible opens having a modified
1044 write time. JRA. */
1045 ZERO_STRUCT(write_time_ts);
1046 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
1047 if (!null_timespec(write_time_ts)) {
1048 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
1049 }
1050
1051 unix_timespec_to_nt_time(&state->out_creation_time,
1052 get_create_timespec(smb1req->conn, result,
1053 result->fsp_name));
1054 unix_timespec_to_nt_time(&state->out_last_access_time,
1055 result->fsp_name->st.st_ex_atime);
1056 unix_timespec_to_nt_time(&state->out_last_write_time,
1057 result->fsp_name->st.st_ex_mtime);
1058 unix_timespec_to_nt_time(&state->out_change_time,
1059 get_change_timespec(smb1req->conn, result,
1060 result->fsp_name));
1061 state->out_allocation_size =
1062 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1063 &(result->fsp_name->st));
1064 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1065 if (state->out_file_attributes == 0) {
1066 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1067 }
1068 state->out_file_id_persistent = result->op->global->open_persistent_id;
1069 state->out_file_id_volatile = result->op->global->open_volatile_id;
1070 state->out_context_blobs = out_context_blobs;
1071
1072 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1073 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1074
1075 tevent_req_done(req);
1076 return tevent_req_post(req, ev);
1077 }
1078
1079 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1080 TALLOC_CTX *mem_ctx,
1081 uint8_t *out_oplock_level,
1082 uint32_t *out_create_action,
1083 NTTIME *out_creation_time,
1084 NTTIME *out_last_access_time,
1085 NTTIME *out_last_write_time,
1086 NTTIME *out_change_time,
1087 uint64_t *out_allocation_size,
1088 uint64_t *out_end_of_file,
1089 uint32_t *out_file_attributes,
1090 uint64_t *out_file_id_persistent,
1091 uint64_t *out_file_id_volatile,
1092 struct smb2_create_blobs *out_context_blobs)
1093 {
1094 NTSTATUS status;
1095 struct smbd_smb2_create_state *state = tevent_req_data(req,
1096 struct smbd_smb2_create_state);
1097
1098 if (tevent_req_is_nterror(req, &status)) {
1099 tevent_req_received(req);
1100 return status;
1101 }
1102
1103 *out_oplock_level = state->out_oplock_level;
1104 *out_create_action = state->out_create_action;
1105 *out_creation_time = state->out_creation_time;
1106 *out_last_access_time = state->out_last_access_time;
1107 *out_last_write_time = state->out_last_write_time;
1108 *out_change_time = state->out_change_time;
1109 *out_allocation_size = state->out_allocation_size;
1110 *out_end_of_file = state->out_end_of_file;
1111 *out_file_attributes = state->out_file_attributes;
1112 *out_file_id_persistent = state->out_file_id_persistent;
1113 *out_file_id_volatile = state->out_file_id_volatile;
1114 *out_context_blobs = state->out_context_blobs;
1115
1116 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
1117
1118 tevent_req_received(req);
1119 return NT_STATUS_OK;
1120 }
1121
1122 /*********************************************************
1123 Code for dealing with deferred opens.
1124 *********************************************************/
1125
1126 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1127 struct timeval *p_request_time,
1128 void **pp_state)
1129 {
1130 struct smbd_smb2_create_state *state = NULL;
1131 struct tevent_req *req = NULL;
1132
1133 if (!smb2req) {
1134 return false;
1135 }
1136 req = smb2req->subreq;
1137 if (!req) {
1138 return false;
1139 }
1140 state = tevent_req_data(req, struct smbd_smb2_create_state);
1141 if (!state) {
1142 return false;
1143 }
1144 if (!state->open_was_deferred) {
1145 return false;
1146 }
1147 if (p_request_time) {
1148 *p_request_time = state->request_time;
1149 }
1150 if (pp_state) {
1151 *pp_state = (void *)state->private_data.data;
1152 }
1153 return true;
1154 }
1155
1156 /*********************************************************
1157 Re-process this call early - requested by message or
1158 close.
1159 *********************************************************/
1160
1161 static struct smbd_smb2_request *find_open_smb2req(
1162 struct smbd_server_connection *sconn, uint64_t mid)
1163 {
1164 struct smbd_smb2_request *smb2req;
1165
1166 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1167 uint64_t message_id;
1168 if (smb2req->subreq == NULL) {
1169 /* This message has been processed. */
1170 continue;
1171 }
1172 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1173 /* This message has been processed. */
1174 continue;
1175 }
1176 message_id = get_mid_from_smb2req(smb2req);
1177 if (message_id == mid) {
1178 return smb2req;
1179 }
1180 }
1181 return NULL;
1182 }
1183
1184 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
1185 {
1186 struct smbd_smb2_create_state *state = NULL;
1187 struct smbd_smb2_request *smb2req;
1188
1189 smb2req = find_open_smb2req(sconn, mid);
1190
1191 if (!smb2req) {
1192 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1193 (unsigned long long)mid));
1194 return false;
1195 }
1196 if (!smb2req->subreq) {
1197 return false;
1198 }
1199 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1200 return false;
1201 }
1202 state = tevent_req_data(smb2req->subreq,
1203 struct smbd_smb2_create_state);
1204 if (!state) {
1205 return false;
1206 }
1207 /* It's not in progress if there's no timeout event. */
1208 if (!state->open_was_deferred) {
1209 return false;
1210 }
1211
1212 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1213 (unsigned long long)mid));
1214
1215 return true;
1216 }
1217
1218 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1219 uint64_t mid)
1220 {
1221 struct smbd_smb2_create_state *state = NULL;
1222
1223 if (!smb2req->subreq) {
1224 return;
1225 }
1226 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1227 return;
1228 }
1229 state = tevent_req_data(smb2req->subreq,
1230 struct smbd_smb2_create_state);
1231 if (!state) {
1232 return;
1233 }
1234
1235 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1236 "mid %llu\n",
1237 (unsigned long long)mid ));
1238
1239 state->open_was_deferred = false;
1240 /* Ensure we don't have any outstanding timer event. */
1241 TALLOC_FREE(state->te);
1242 /* Ensure we don't have any outstanding immediate event. */
1243 TALLOC_FREE(state->im);
1244 }
1245
1246 void remove_deferred_open_message_smb2(
1247 struct smbd_server_connection *sconn, uint64_t mid)
1248 {
1249 struct smbd_smb2_request *smb2req;
1250
1251 smb2req = find_open_smb2req(sconn, mid);
1252
1253 if (!smb2req) {
1254 DEBUG(10,("remove_deferred_open_message_smb2: "
1255 "can't find mid %llu\n",
1256 (unsigned long long)mid ));
1257 return;
1258 }
1259 remove_deferred_open_message_smb2_internal(smb2req, mid);
1260 }
1261
1262 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1263 struct tevent_immediate *im,
1264 void *private_data)
1265 {
1266 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1267 struct smbd_smb2_request);
1268 struct smbd_server_connection *sconn = smb2req->sconn;
1269 uint64_t mid = get_mid_from_smb2req(smb2req);
1270 NTSTATUS status;
1271
1272 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1273 "re-dispatching mid %llu\n",
1274 (unsigned long long)mid ));
1275
1276 status = smbd_smb2_request_dispatch(smb2req);
1277 if (!NT_STATUS_IS_OK(status)) {
1278 smbd_server_connection_terminate(sconn, nt_errstr(status));
1279 return;
1280 }
1281 }
1282
1283 bool schedule_deferred_open_message_smb2(
1284 struct smbd_server_connection *sconn, uint64_t mid)
1285 {
1286 struct smbd_smb2_create_state *state = NULL;
1287 struct smbd_smb2_request *smb2req;
1288
1289 smb2req = find_open_smb2req(sconn, mid);
1290
1291 if (!smb2req) {
1292 DEBUG(10,("schedule_deferred_open_message_smb2: "
1293 "can't find mid %llu\n",
1294 (unsigned long long)mid ));
1295 return false;
1296 }
1297 if (!smb2req->subreq) {
1298 return false;
1299 }
1300 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1301 return false;
1302 }
1303 state = tevent_req_data(smb2req->subreq,
1304 struct smbd_smb2_create_state);
1305 if (!state) {
1306 return false;
1307 }
1308
1309 /* Ensure we don't have any outstanding timer event. */
1310 TALLOC_FREE(state->te);
1311 /* Ensure we don't have any outstanding immediate event. */
1312 TALLOC_FREE(state->im);
1313
1314 /*
1315 * This is subtle. We must null out the callback
1316 * before rescheduling, else the first call to
1317 * tevent_req_nterror() causes the _receive()
1318 * function to be called, this causing tevent_req_post()
1319 * to crash.
1320 */
1321 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1322
1323 state->im = tevent_create_immediate(smb2req);
1324 if (!state->im) {
1325 smbd_server_connection_terminate(smb2req->sconn,
1326 nt_errstr(NT_STATUS_NO_MEMORY));
1327 return false;
1328 }
1329
1330 DEBUG(10,("schedule_deferred_open_message_smb2: "
1331 "re-processing mid %llu\n",
1332 (unsigned long long)mid ));
1333
1334 tevent_schedule_immediate(state->im,
1335 smb2req->sconn->ev_ctx,
1336 smbd_smb2_create_request_dispatch_immediate,
1337 smb2req);
1338
1339 return true;
1340 }
1341
1342 /*********************************************************
1343 Re-process this call.
1344 *********************************************************/
1345
1346 static void smb2_deferred_open_timer(struct event_context *ev,
1347 struct timed_event *te,
1348 struct timeval _tval,
1349 void *private_data)
1350 {
1351 NTSTATUS status;
1352 struct smbd_smb2_create_state *state = NULL;
1353 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1354 struct smbd_smb2_request);
1355
1356 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1357 smb2req->current_idx,
1358 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1359
1360 state = tevent_req_data(smb2req->subreq,
1361 struct smbd_smb2_create_state);
1362 if (!state) {
1363 return;
1364 }
1365 /*
1366 * Null this out, don't talloc_free. It will
1367 * be talloc_free'd by the tevent library when
1368 * this returns.
1369 */
1370 state->te = NULL;
1371 /* Ensure we don't have any outstanding immediate event. */
1372 TALLOC_FREE(state->im);
1373
1374 /*
1375 * This is subtle. We must null out the callback
1376 * before rescheduling, else the first call to
1377 * tevent_req_nterror() causes the _receive()
1378 * function to be called, this causing tevent_req_post()
1379 * to crash.
1380 */
1381 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1382
1383 status = smbd_smb2_request_dispatch(smb2req);
1384
1385 if (!NT_STATUS_IS_OK(status)) {
1386 smbd_server_connection_terminate(smb2req->sconn,
1387 nt_errstr(status));
1388 }
1389 }
1390
1391 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1392 {
1393 struct smbd_smb2_request *smb2req = NULL;
1394 struct smbd_smb2_create_state *state = tevent_req_data(req,
1395 struct smbd_smb2_create_state);
1396 uint64_t mid;
1397
1398 if (!state) {
1399 return false;
1400 }
1401
1402 if (!state->smb2req) {
1403 return false;
1404 }
1405
1406 smb2req = state->smb2req;
1407 mid = get_mid_from_smb2req(smb2req);
1408
1409 if (is_deferred_open_async(state->private_data.data)) {
1410 /* Can't cancel an async create. */
1411 return false;
1412 }
1413
1414 remove_deferred_open_entry(state->id, mid,
1415 messaging_server_id(smb2req->sconn->msg_ctx));
1416 remove_deferred_open_message_smb2_internal(smb2req, mid);
1417
1418 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1419 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1420 return true;
1421 }
1422
1423 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1424 struct timeval request_time,
1425 struct timeval timeout,
1426 struct file_id id,
1427 char *private_data,
1428 size_t priv_len)
1429 {
1430 struct tevent_req *req = NULL;
1431 struct smbd_smb2_create_state *state = NULL;
1432 struct timeval end_time;
1433
1434 if (!smb2req) {
1435 return false;
1436 }
1437 req = smb2req->subreq;
1438 if (!req) {
1439 return false;
1440 }
1441 state = tevent_req_data(req, struct smbd_smb2_create_state);
1442 if (!state) {
1443 return false;
1444 }
1445 state->id = id;
1446 state->request_time = request_time;
1447 state->private_data = data_blob_talloc(state, private_data,
1448 priv_len);
1449 if (!state->private_data.data) {
1450 return false;
1451 }
1452
1453 /* Re-schedule us to retry on timer expiry. */
1454 end_time = timeval_sum(&request_time, &timeout);
1455
1456 DEBUG(10,("push_deferred_open_message_smb2: "
1457 "timeout at %s\n",
1458 timeval_string(talloc_tos(),
1459 &end_time,
1460 true) ));
1461
1462 state->open_was_deferred = true;
1463 state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1464 state,
1465 end_time,
1466 smb2_deferred_open_timer,
1467 smb2req);
1468 if (!state->te) {
1469 return false;
1470 }
1471
1472 /* allow this request to be canceled */
1473 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1474
1475 return true;
1476 }
Working branch of Samba for id10ts